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參數資料
| 型號： | AC244 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS |
| 中文描述： | 八路緩沖器/ 3司機態輸出 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 328K |
| 代理商： | AC244 |
SCAS514E JUNE 1995 REVISED OCTOBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
2-V to 6-V V
CC
Operation
Inputs Accept Voltages to 6 V
Max t
pd
of 7.5 ns at 5 V
description/ordering information
These octal buffers and line drivers are designed
specifically to improve the performance and
density of 3-state memory address drivers, clock
drivers,
and
bus-oriented
transmitters.
receivers
and
The ’AC244 devices are organized as two 4-bit
buffers/drivers with separate output-enable (OE)
inputs. When OE is low, the device passes
noninverted data from the A inputs to the Y
outputs. When OE is high, the outputs are in the
high-impedance state.
To ensure the high-impedance state during power
up or power down, OE should be tied to V
CC
through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking
capability of the driver.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube
SN74AC244N
SN74AC244N
SOIC DW
Tube
SN74AC244DW
AC244
Tape and reel
SN74AC244DWR
°
C to 85
°
C
40
SOP NS
Tape and reel
SN74AC244NSR
AC244
SSOP DB
Tape and reel
SN74AC244DBR
AC244
TSSOP PW
Tube
SN74AC244PW
AC244
Tape and reel
SN74AC244PWR
CDIP J
Tube
SNJ54AC244J
SNJ54AC244J
55 C to 125 C
CFP W
Tube
SNJ54AC244W
SNJ54AC244W
LCCC FK
Tube
SNJ54AC244FK
SNJ54AC244FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright
2003, Texas Instruments Incorporated
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SN54AC244 . . . J OR W PACKAGE
SN74AC244 . . . DB, DW, N, NS, OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54AC244 . . . FK PACKAGE
(TOP VIEW)
2
1
1
1
2
2
2
G
2
V
C
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
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